PROCESS TO MANUFACTURE THREE DIMENSIONALLY SHAPED SUBSTRATE FOR SOUND ABATEMENT

• Main Authors: GUARNIERI, WALTER, BLASZKIEWICZ, MICHAEL A, LEE, BIN, MATWICZYK, THOMAS J, MEYER-AHRENS, SVEN
• Format: Patent
• Language: English; French
• Published: 20.09.2003
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMISTRY; COMPOSITIONS BASED THEREON; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention is directed to a process for the manufacture of three-dimensional acoustically sound automotive insulation parts. In particular, the process includes mixing a two component polyurethane resin, applying the resin to a substrate, molding the substrate and then trimming and demolding the resin applied substrate.